lst = ["周润发","周星驰","周笔畅","周公瑾",["九品芝麻官",["吴孟达","alex","林雪"],"算死草","赌侠","赌圣","整蛊专家"]]
print(lst[4][1][0])

# s = lst[4][1][1].capitalize()
# lst[4][1][1] = s

lst[4][1][1] = lst[4][1][1].capitalize()
print(lst)